Tiansu (Tianjin) Valve Group Co., Ltd. yog ib qho ntawm cov tuam txhab ua lag luam thiab cov neeg muag khoom ntawm stem flanged rooj vag valve hauv Suav teb. Yog hais tias koj yuav mus yuav cov lag luam wholesale customized nce qia flanged rooj vag valve ua nyob rau hauv Suav teb, txais tos kom tau txais cov lus hais los ntawm peb lub hoobkas. Cov khoom zoo thiab tus nqi tsim nyog muaj.
Cov pa roj carbon steel flanged rooj vag valve yog ib qho kev kaw -off valve hauv cov kav dej. Nws siv cov pa roj carbon steel rau lub cev, kev sib txuas flanged, thiab nce qia tsim. Valves zoo li cov pa roj carbon steel nce qia rooj vag valve muab tus nqi- ua tau zoo thiab kev tawm tswv yim meej.
Qhov nce qia yog ib qho tseem ceeb feature: lub qia txav mus rau sab nraud nrog lub rooj vag, tso cai rau kev pom qhov pom tseeb thiab khaws cov xov kom deb ntawm qhov nruab nrab kom txo tau corrosion. Txoj kev khiav yog ze li ntawm qhov ncaj, txo qis kev poob siab thiab txuag lub zog siv zog. Tag nrho - qauv tsim tso cai nkag mus rau cov kav dej huv.
Lub cev feem ntau siv WCB carbon steel rau lub zog zoo thiab tus nqi pheej yig, tuav nruab nrab -siab siab thiab thermal shock. Lub qia tuaj yeem siv 2Cr13 stainless hlau kom hnav zoo dua thiab tiv thaiv corrosion. Tus tsim feem ntau nta lub rooj vag hloov tau yooj yim rau kev txhim kho sealing ntawm elastic nyiaj. Sealing nto feem ntau nyuaj- ntsib nrog stainless hlau lossis alloy. Cov pa roj carbon steel flanged nce qia rooj vag valve siv flanged kawg rau kev yooj yim installation / tshem tawm thiab txhim khu kev qha sealing.
Product Core Parameters
- Nominal Txoj kab uas hla: DN50-DN200
- Nominal Siab: PN10, PN16, PN25, PN40
- Ua haujlwm kub: 0-80 degree
- Siv tau nruab nrab: Dej
Khoom siv
Carbon steel flanged gate valve yog tsim rau roj av, tshuaj, hluav taws xob, metallurgy, dej hauv nroog, thiab kev lag luam dej. Siv rau kev sib cais cov kua dej hauv nruab nrab / siab - cov kav dej siab, tshwj xeeb tshaj yog qhov xav tau kev pom zoo ntawm qhov pom.
Txoj Cai Kev Ua Haujlwm
Thaum kaw, sealing tuaj yeem tso siab rau nruab nrab nias lub rooj vag tawm tsam lub rooj zaum (tus kheej- sealing). Cov pa roj carbon steel nce qia rooj vag valve txav linearly nrog lub qia. Ib txoj hlua trapezoidal ntawm lub nce qia koom nrog cov txiv ntoo saum toj kawg nkaus, hloov lub zog rotary mus rau txoj kab tawm. Tag nrho qhib tau mus txog thaum lub rooj vag mus ncig sib npaug ntawm lub npe bore. Lub qia txoj hauj lwm saum toj kawg nkaus qhia tias "qhib tag nrho." Txhawm rau tiv thaiv kev ntsuas cua sov, cov pa roj carbon steel flanged nce qia rooj vag valve feem ntau qhib siab ces rov qab tawm ½-1 tig. Yog li, txoj haujlwm qhib tag nrho yog txhais los ntawm qhov rooj mus ncig.
Maintenance & Installation Notes
1. Cov ntawv sau
Kev npaj
Paub meej tias tus qauv valve, PN rating, qhov loj qhov sib tw kav dej (piv txwv li, Z41H-16C rau PN16, tsis yog-corrosive media). Xyuas lub cev / flange ntsej muag rau khawb / xeb, xyuas kom cov qia txav tau yooj yim, gaskets tsis zoo. Ntxuav cov yeeb nkab flange ntsej muag.
Txoj hauj lwm & Kev taw qhia
Nyiam kev teeb tsa kab rov tav nrog cov qia ntsug nce siab, tso cai ntau dua lossis sib npaug rau 25cm qhov chaw ua haujlwm. Tsis txhob nruab inverted lossis tilted. Tsis muaj kev txwv kev khiav dej num, tab sis ua raws li lub cev xub xub yog tam sim no.
Flange kev twb kev txuas
Teem lub bolts qhov, nruab nrab gasket. Tighten bolts symmetrically thiab tusyees rau uniform torque. Bolts yuav tsum protrude 2-3 threads.
Kev Ntsuas Siab & Kev Ua Haujlwm
Hydrostatic kuaj ntawm 1.5x ntsuas siab rau 60 sec, tsis muaj qhov xau. Pressurize maj mam, los ntshav. Tsis txhob ntaus valve nyob rau hauv siab. Lub voj voog lub voj voog qhib / kaw 1-2 zaug kom paub meej tias kev ua haujlwm zoo.
2. Daim ntawv siv
Kev ua haujlwm
Tig lub log maj mam; zam lub zog. Tom qab qhib tag nrho, kaw rov qab ¼ tig. Tsis txhob dhau-nrawm thaum kaw. Siv qia txuas ntxiv kom paub meej txoj haujlwm.
Media & Cov xwm txheej
Rau dej/tsis yog -corrosive media nkaus xwb. Tsis txhob siv nrog cov kua qaub / alkali. Tsis txhob tshaj qhov ntsuas kub / siab.
Kev daws teeb meem
Yog hais tias qia sticks, tsis txhob quab yuam; sim lubricant. Yog tias tseem muaj, tshuaj xyuas cov khib nyiab / xeb. Rau kev xau, nruj flange bolts ua ntej; hloov gasket lossis kho lub rooj zaum yog xav tau. Cais tawm thiab depressurize ua ntej kho.
Txwv tsis pub
Tsis txhob dai qhov hnyav ntawm lub valve, ntaus lub cev / tes tuav, siv cov khib nyiab ntawm tes, los yog tshem tawm hauv qab siab.
3. Lub Sijhawm Saib Xyuas
Txhua hli
Lub cev huv si, flanges, handwheel; tshawb xyuas cov dej xau, xoob bolts; xyuas kom qia txav du.
Peb lub hlis twg
Lubricate qia threads thiab pivots nrog roj muaj roj (xws li, lithium-raws li); tshuaj xyuas/hloov cov laus gaskets; huv si qia.
Txhua xyoo
Disassemble los tshuaj xyuas lub rooj vag / lub rooj zaum; polish me me hnav, hloov yog hnyav; ntxuav sab hauv kab noj hniav; derust thiab pleev xim rau carbon hlau (epoxy primer + polyurethane topcoat); re-test tom qab reassembly.
Ntev - Lub Sij Hawm Cia
Cais tawm, ntws tawm, siv cov roj los tiv thaiv- xeb rau qia / xov, txhim kho lub kaus mom tiv thaiv, khaws cia hauv qhov chaw qhuav, qhov cua.
Common Failures & Solutions
|
Common Failure |
Ua rau |
Kev kho mob |
|
Flange Joint Leakage |
1. Gasket hnub nyoog / puas; 2. Bolts unevenly tightened; 3.Flange lub ntsej muag khawb / paug. |
1. Hloov cov gasket haum (xws li, compressed asbestos, kauv- qhov txhab); 2. Tighten bolts tusyees kom sib npaug torque; 3. Ntxuav lub ntsej muag, txhuam lub teeb khawb nrog cov ntawv xuab zeb zoo; kho lub ntsej muag yog mob hnyav. |
|
Stem Movement Stiffness |
1. Xov corroded / qhuav; 2. Cov khib nyiab hauv kab noj hniav jamming rooj vag; 3. Qws khoov / xov hnav. |
1. Ntxuav cov xov, thov cov roj lithium; 2. Ua haujlwm maj mam yaug; disassemble thiab ntxuav yog tias xav tau; 3. Ncaj los yog hloov khoov qia; hloov yog threads hnav. |
|
Handwheel nyuaj tig |
1. qia threads corroded; 2. Rooj vag jammed; 3. Handwheel lossis tsav puas. |
1. Siv cov roj nkag, ces lubricate; 2. Disassemble kom tshem tawm qhov thaiv; 3. Hloov lub log lossis qhov chaw uas puas lawm. |
|
Tsis paub meej Stem Scale/Position |
1. qia rusted / xim ploj mus; 2. Lub zog txav txawv txav (nplaum / khoov). |
1. Derust thiab re-kos scale (kom meej meej qhia tag nrho -qhib/kaw); 2. Teeb meem ua rau (jamming / dabtsi yog khoov), kho kom du mus. |
|
Lub cev Corrosion & Leakage |
1. Tsis muaj kev tiv thaiv corrosion ntawm carbon steel; 2. Qhov nruab nrab muaj cov khoom corrosive; 3. Sab nraum zoov tsis muaj chaw nyob. |
1. Derust, thov epoxy primer + polyurethane topcoat; 2. Siv corrosion-resistant valve (xws li, stainless) los yog ntxiv kev tiv thaiv upstream; 3. Txhim kho lub hau npog rau sab nraum zoov li qub. |
FAQ
Q: Dab tsi yog qhov kev tiv thaiv corrosion zoo rau cov pa roj carbon steel flanged rooj vag valve siv sab nraum zoov?
A: Sab nrauv yuav tsum tau ntxuav kom huv si, primed nrog epoxy txheej, thiab ua tiav nrog polyurethane topcoat. Kev tshuaj xyuas tsis tu ncua rau txheej txheej puas yog qhov tseem ceeb, thiab txhua yam hlau raug yuav tsum tau kho dua tshiab kom tsis txhob xeb.
Q: Vim li cas thiaj li yuav tsum tsis txhob siv cov pa roj carbon steel nce siab lub rooj vag valve?
A: Throttling ua rau siab - nrawm, turbulent ntws hla lub qhov rooj qhib ib nrab thiab lub rooj zaum, ua rau kev yaig sai ntawm qhov chaw sib khi, kev co, thiab qhov tshwm sim los. Nws yog tsim los nruj me ntsis rau kev qhib tag nrho lossis kaw tag nrho.
Q: Yuav ua li cas feem ntau yuav tsum tau nthuav tawm qia threads ntawm carbon steel flanged nce qia rooj vag valve yuav lubricated?
A: Raws li cov kev pabcuam ib txwm muaj, lubrication nrog cov roj uas tsim nyog (piv txwv li, lithium{2}}raws li) yuav tsum tau ua txhua lub hlis twg. Hauv plua plav, ntub dej, lossis siab - daim ntawv thov mus ncig, yuav tsum tau lubrication ntau zaus.
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